Important European players – including France, Britain, and Germany – apparently were not aware of the talks.
The Trump administration left the deal in 2018, but Biden has been clear about his desire to return to the agreement known as the Joint Comprehensive Plan of Action. It was signed by Iran and the six world powers: the US, Russian, China, France, Germany and Great Britain.
Washington seeks to lengthen and strengthen the nuclear constraints on Iran through diplomacy, and the issue will be part of Biden's early talks with foreign counterparts and allies, Psaki said on Wednesday.
Biden has said that if Tehran resumes strict compliance with the 2015 nuclear agreement – under which Iran restrained its nuclear program in return for relief from economic sanctions – Washington would, too.
"The president has made clear that he believes that through follow-on diplomacy, the United States seeks to lengthen and strengthen nuclear constraints on Iran and address other issues of concern. Iran must resume compliance with significant nuclear constraints under the deal in order for that to proceed," Psaki said in a briefing.
"We would expect that some of his earlier conversations with foreign counterparts and foreign leaders will be with partners and allies, and you would certainly anticipate that this would be part of the discussions," Psaki added.
On Tuesday, Blinken said America did not face a quick decision on whether to rejoin the nuclear deal, adding that the Democratic president would need to see what Iran actually did to resume complying with the pact.
Iran in return has gradually breached key limits on its nuclear activity set in the deal, building up its stockpile of low-enriched uranium, enriching uranium to higher levels of purity and installing centrifuges in ways barred by the deal.
"The world knows that only the US can fix itself – in practice; not just words," Khatibzadeh said in a Twitter post.The DIPLOMATIC VANDALISM of Trump, Pompeo & co stemmed partly from a broken institutional process. But that same process-when "functional"-produced disasters like wars in Iraq, Afghanistan & Vietnam.
— Saeed Khatibzadeh (@SKhatibzadeh) January 20, 2021
The world knows that only the US can fix itself - in practice; not just words. pic.twitter.com/95CVkBgCVw